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Large waist linked to poor health, even among those in healthy body mass index ranges

Date:
March 12, 2014
Source:
Mayo Clinic
Summary:
Having a big belly has consequences beyond trouble squeezing into your pants. It’s detrimental to your health, even if you have a healthy body mass index (BMI), a new international collaborative study has found. Men and women with large waist circumferences were more likely to die younger, and were more likely to die from illnesses such as heart disease, respiratory problems, and cancer after accounting for body mass index, smoking, alcohol use and physical activity.

Having a big belly has consequences beyond trouble squeezing into your pants. It's detrimental to your health, even if you have a healthy body mass index (BMI), a new international collaborative study led by a Mayo Clinic researcher found. Men and women with large waist circumferences were more likely to die younger, and were more likely to die from illnesses such as heart disease, respiratory problems, and cancer after accounting for body mass index, smoking, alcohol use and physical activity. The study is published in the March edition of Mayo Clinic Proceedings.

The researchers pooled data from 11 different cohort studies, including more than 600,000 people from around the world. They found that men with waists 43 inches or greater in circumference had a 50 percent higher mortality risk than men with waists less than 35 inches, and this translated to about a three-year lower life expectancy after age 40. Women with a waist circumference of 37 inches or greater had about an 80 percent higher mortality risk than women with a waist circumference of 27 inches or less, and this translated to about a five-year lower life expectancy after age 40.

Importantly, risk increased in a linear fashion such that for every 2 inches of greater circumference, mortality risk went up about 7 percent in men and about 9 percent in women. Thus, there was not one natural "cutpoint" for waist circumference that could be used in the clinic, as risk increased across the spectrum of circumferences.

Another key finding was that elevated mortality risk with increasing waist circumference was observed at all levels of BMI, even among people who had normal BMI levels. Because of the large size of this pooled study, researchers were able to clearly show the independent contribution of waist circumference after accounting for BMI, says James Cerhan, M.D., Ph.D., a Mayo Clinic epidemiologist and lead author of the study.

"BMI is not a perfect measure," says Dr. Cerhan. "It doesn't discriminate lean mass from fat mass, and it also doesn't say anything about where your weight is located. We worry about that because extra fat in your belly has a metabolic profile that is associated with diseases such as diabetes and heart disease."

Dr. Cerhan says physicians should consider both BMI and waist circumference as part of risk assessment for obesity-related premature mortality.

"The primary goal should be preventing both a high BMI and a large waist circumference," Dr. Cerhan says. "For those patients who have a large waist, trimming down even a few inches -- through exercise and diet -- could have important health benefits."


Story Source:

The above story is based on materials provided by Mayo Clinic. Note: Materials may be edited for content and length.


Journal Reference:

  1. James R. Cerhan, Steven C. Moore, Eric J. Jacobs, Cari M. Kitahara, Philip S. Rosenberg, Hans-Olov Adami, Jon O. Ebbert, Dallas R. English, Susan M. Gapstur, Graham G. Giles, Pamela L. Horn-Ross, Yikyung Park, Alpa V. Patel, Kim Robien, Elisabete Weiderpass, Walter C. Willett, Alicja Wolk, Anne Zeleniuch-Jacquotte, Patricia Hartge, Leslie Bernstein, Amy Berrington de Gonzalez. A Pooled Analysis of Waist Circumference and Mortality in 650,000 Adults. Mayo Clinic Proceedings, 2014; 89 (3): 335 DOI: 10.1016/j.mayocp.2013.11.011

Cite This Page:

Mayo Clinic. "Large waist linked to poor health, even among those in healthy body mass index ranges." ScienceDaily. ScienceDaily, 12 March 2014. <www.sciencedaily.com/releases/2014/03/140312114559.htm>.
Mayo Clinic. (2014, March 12). Large waist linked to poor health, even among those in healthy body mass index ranges. ScienceDaily. Retrieved October 2, 2014 from www.sciencedaily.com/releases/2014/03/140312114559.htm
Mayo Clinic. "Large waist linked to poor health, even among those in healthy body mass index ranges." ScienceDaily. www.sciencedaily.com/releases/2014/03/140312114559.htm (accessed October 2, 2014).

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